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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. BZX84J-B15,115

Name: BZX84J-B15,115
Brand: Nexperia USA Inc.
SKU: BZX84J-B15,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84J-B15,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: SC-90, SOD-323F

Datasheet:: BZX84J-B15,115.pdf

Description:: DIODE ZENER 15V 550MW SOD323F

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Product details

Overview

BZX84J-B15,115 from Nexperia is a 15 V ±2 % tolerance Zener diode in SOD323F (SC-90) package, designed for precision voltage regulation and reference functions in low-power analog circuits. It delivers 15.0 V nominal Zener voltage at 5 mA test current, 99 Ω differential resistance, and 9.2 mV/K temperature coefficient, with AEC-Q101 qualification for automotive use.

For engineers reviewing the BZX84J-B15,115 datasheet, BZX84J-B15,115 pinout, BZX84J-B15,115 application, or BZX84J-B15,115 equivalent, key selection criteria include Zener voltage tolerance, thermal stability under ambient variation, non-repetitive surge capability (40 W), and surface-mount compatibility in space-constrained PCB layouts.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable DC voltage across its terminals under varying load and input conditions. Its 15 V nominal Zener voltage is specified at I_Z = 5 mA with ±2 % tolerance, and it exhibits a positive temperature coefficient of +9.2 mV/K over 25–150 °C, enabling predictable drift compensation in reference designs.

The device supports pulsed reverse power dissipation up to 40 W (t_p = 100 μs, square wave, T_j = 25 °C), while continuous total power dissipation is limited to 550 mW at T_amb ≤ 25 °C on FR4 PCB. Its low 99 Ω differential resistance ensures minimal output voltage variation with current changes from 1–20 mA.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	15.0 V nominal at I_Z = 5 mA; tight ±2 % tolerance enables accurate voltage referencing in feedback loops.
Differential Resistance (r_diff)	99 Ω typical; low impedance stabilizes regulated output against load current fluctuations.
Temperature Coefficient (S_Z)	+9.2 mV/K; predictable positive drift allows thermal error modeling in precision references.
Non-repetitive Peak Power (P_ZSM)	40 W (t_p = 100 μs); handles transient overvoltage surges without degradation.
Total Power Dissipation (P_tot)	550 mW at T_amb ≤ 25 °C; defines maximum steady-state thermal load on FR4 PCB.
Reverse Current (I_R)	≤ 0.05 μA at V_R = 11.2 V; ensures minimal leakage in high-impedance bias networks.
Forward Voltage (V_F)	1.1 V at I_F = 100 mA; supports bidirectional clamping or ESD protection when forward-biased.

Pinout & Package

SOD323F (SC-90) ultra-small flat-lead surface-mount package: 2.3 mm × 1.35 mm body, 0.65 mm height, cathode marked by bar on top surface.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode (K)	Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation.
2	Anode (A)	Connected to ground or lower-potential rail; reverse-bias polarity must be maintained for Zener operation.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock testing.
±2 % Zener voltage tolerance	Enables tighter regulation than ±5 % variants, reducing need for post-production trimming in reference circuits.
Low 99 Ω differential resistance	Minimizes output voltage deviation under ±1 mA load current change-critical for ADC reference buffers.
40 W non-repetitive surge rating	Withstands ESD-like transients per IEC 61000-4-2 without parameter shift or failure.
SOD323F footprint compatibility	Matches JEDEC SC-90 standard; enables drop-in replacement in existing 0805-class layouts with no rework.

Applications

Automotive Body Control Module (BCM)

Industrial Sensor Signal Conditioning

Use Scenario: Stable 15 V reference for microcontroller ADC inputs monitoring battery voltage and HVAC actuator feedback.

IC Role / Device Role / Timing Role: Zener voltage reference providing fixed bias point for ratiometric sensor scaling and fault detection thresholds.

Use Value: ±2 % tolerance and +9.2 mV/K TC allow calibration compensation across −40 °C to +125 °C ambient range.

Use Scenario: Precision voltage clamp in 4–20 mA transmitter loop powered from 24 V supply.

IC Role / Device Role / Timing Role: Reverse-biased Zener regulating loop supply rail to protect op-amp front-end from overvoltage during line faults.

Use Value: 40 W surge rating absorbs induced transients from solenoid switching without latch-up or parameter shift.

Medical Portable Diagnostic Device

Consumer IoT Power Management

Use Scenario: Low-noise 15 V reference for photodiode transimpedance amplifier in pulse oximeter analog front-end.

IC Role / Device Role / Timing Role: Zener diode establishing stable bias voltage for op-amp common-mode control and gain-setting resistors.

Use Value: 99 Ω r_diff limits noise contribution to <0.5 μV/√Hz, preserving signal integrity in sub-μA current measurements.

Use Scenario: Overvoltage protection and voltage translation between 3.3 V MCU GPIO and 15 V external sensor interface.

IC Role / Device Role / Timing Role: Bidirectional clamp (forward VF = 1.1 V, reverse VZ = 15 V) limiting signal excursion beyond safe logic levels.

Use Value: SOD323F package fits 1.0 mm pitch routing in compact wearable PCBs while maintaining 550 mW thermal margin.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C15,115	±5 % tolerance (vs. ±2 %), higher 105 Ω r_diff, +8.0 mV/K TC	Acceptable where cost sensitivity outweighs precision; less suitable for wide-temperature calibration.	Select for non-critical biasing where 15 V ±0.75 V is sufficient and BOM cost reduction is prioritized.
MMSZ4685T1G	15 V ±5 %, 100 Ω r_diff, SOD-123 package (larger footprint), no AEC-Q101 qualification	Lacks automotive qualification; thermal resistance 300 K/W vs. 230 K/W limits power handling on same PCB.	Use only in commercial-grade consumer products where qualification and miniaturization are not required.

Compared with BZX84J-B15,115, the BZX84-C15,115 trades precision for cost, while MMSZ4685T1G sacrifices automotive reliability and board area efficiency-making the BZX84J-B15,115 optimal for space-constrained, thermally demanding automotive and industrial reference designs.

Availability

BZX84J-B15,115 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor transmitters, portable medical diagnostics, and consumer IoT power interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BZX84J-B15,115 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.

The BZX84J series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for precision voltage regulation and reference applications in harsh-environment automotive and industrial systems.

FAQ

What is the maximum continuous power dissipation for BZX84J-B15,115 at 85 °C ambient?

At T_amb = 85 °C, derated power is calculated using R_th(j-a) = 230 K/W: P_tot = (T_j(max) − T_amb) / R_th(j-a) = (150 − 85) / 230 ≈ 283 mW. This reflects real thermal limits on standard FR4 PCBs without heatsinking or forced airflow.

Can BZX84J-B15,115 be used in forward conduction mode for ESD protection?

Yes-its 1.1 V forward voltage at 100 mA and 250 mA absolute maximum forward current support bidirectional transient suppression. However, its primary design intent and characterization are for reverse-bias Zener regulation; forward-clamp performance is secondary and unqualified per IEC 61000-4-2.

How does the +9.2 mV/K temperature coefficient impact long-term reference stability?

Over a 100 °C range (−40 to +60 °C), the coefficient causes ~920 mV drift in V_Z. In practice, this is mitigated by pairing with complementary TC components or using it in compensated topologies-its predictability enables first-order correction in firmware or analog circuitry.

Is the SOD323F package compatible with standard 0805 reflow profiles?

Yes-Nexperia specifies reflow soldering only, with peak temperature ≤ 260 °C and time above liquidus ≤ 60 s. The SOD323F thermal mass and lead-free compatibility align fully with IPC/JEDEC J-STD-020D.2 Class 3 profiles, requiring no process modification from standard 0805 assembly lines.

BZX84J-B15,115 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: SC-90, SOD-323F

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 15 V

Tolerance:: ±2%

Power - Max:: 550 mW

Impedance (Max) (Zzt):: 15 Ohms

Current - Reverse Leakage @ Vr:: 50 nA @ 10.5 V

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 100 mA

Operating Temperature:: -65°C ~ 150°C

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-323F

BZX84J-B15,115 FAQ

1.How can I place an order for BZX84J-B15,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84J-B15,115 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for BZX84J-B15,115 reliable?

The price and inventory of BZX84J-B15,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84J-B15,115 is usually 5 days.

3.What payment methods are accepted for BZX84J-B15,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84J-B15,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84J-B15,115?

BZX84J-B15,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84J-B15,115 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for BZX84J-B15,115?

For technical support, including BZX84J-B15,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84J-B15,115 requirements.

6.How does Aetrix verify that BZX84J-B15,115 is sourced from the original manufacturer or authorized distributors?

All BZX84J-B15,115 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BZX84J-B15,115 meets industry standards.

7.What is the process for return or replacement of BZX84J-B15,115?

All BZX84J-B15,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84J-B15,115, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The BZX84J-B15,115 part is unused and in its original packaging.

Return procedure for BZX84J-B15,115:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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